Electrochemical rehabilitation method for concrete structures deteriorated by the combination of chloride attack and ASR

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For investigating the rehabilitation effect of the proposed method, the specimens installing HPFRCC anode layer containing a lithium salt were prepared. As the results of passing electric current in the cases of 1A/m^2 for 8 weeks or 0.5 A/m^2 for 16 weeks, the protection effect against a steel corrosion was gained from the treatment in both cases. Moreover, a suppression of ASR-expansion due to the application of the proposed method was shown. The suppression effect was remarkable around the HPFRCC anode layer and LiNO_3 was more effective than LiOH as the additive in HPFRCC.